'Big Bang Theory' Star Simon Helberg Welcomes A Son

Jocelyn Towne and Simon Helberg attend the "We'll Never Have Paris" premiere during the 2014 SXSW Music, Film + Interactive Festival at the Topfer Theatre at ZACH, March 10, 2014, in Austin, Texas.

Michael Loccisano/SXSW/Getty Images

Simon Helberg is a dad times two.

The "Big Bang Theory" star and his wife, Jocelyn Towne, have welcomed their second child, a boy.

Wilder Towne Helberg was born April 23, a rep for the actor confirmed to ABC News. Baby Wilder joins big sister Adeline, 2.

Helberg, 33, and Towne were married in 2007. They recently worked together on the film, "I Am I." Both appeared in the movie, and Towne wrote, directed and executive produced it. Helberg was also listed as an executive producer.